Designation E2377 − 10 Standard Specification for Shelter, Electrical Equipment, Lightweight1 This standard is issued under the fixed designation E2377; the number immediately following the designatio[.]
Trang 1Designation: E2377−10
Standard Specification for
This standard is issued under the fixed designation E2377; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision A number in parentheses indicates the year of last reapproval A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1 Scope
1.1 This specification covers two types of lightweight
elec-trical equipment shelters designed for transport on the
M1152A1, M1152A1 with B2 Armor Kit, M1037, and M1097
High Mobility Multipurpose Wheeled Vehicle (HMMWV)
These shelters are transported by rail, air, marine and highway
when mounted or dismounted from their vehicles
1.2 Classification—The shelters will be of the following
types, as specified (see6.2)
1.2.1 Type I—Shelter, Electrical Equipment, Lightweight
(w/o Tunnel, 17-2-0035-1)
1.2.2 Type III—Shelter, Electrical Equipment, Lightweight,
Modified, General Purpose (w/ Tunnel, 17-2-0035-3)
1.3 The values stated in inch-pound units are to be regarded
as standard The values given in parentheses are mathematical
conversions to SI units that are provided for information only
and are not considered standard
1.4 The following safety hazards caveat pertains only to the
test required portion, Section 4, of this specification: This
standard does not purport to address all of the safety concerns,
if any, associated with its use It is the responsibility of the user
of this standard to establish appropriate safety and health
practices and determine the applicability of regulatory
require-ments prior to use.
2 Referenced Documents
2.1 ASTM Standards:2
E1851Test Method for Electromagnetic Shielding
Effec-tiveness of Durable Rigid Wall Relocatable Structures
E1925Specification for Engineering and Design Criteria for
Rigid Wall Relocatable Structures
2.2 Commercial Standard:3
SAE-AS8090Equipment, Towed Aerospace Ground, Mobil-ity
2.3 Federal Standard:4
FED-STD-595Colors Used in Government Procurement
2.4 Military Standards:4
MIL-STD-209Slinging and Tiedown Provisions for Lifting and Tying Down Military Equipment
MIL-STD-810Environmental Test Methods and Engineer-ing Guidelines
MIL-STD-1366Transportability Criteria MIL-C-53072Chemical Agent Resistant Coating (CARC) System Application Procedures and Quality Control In-spection
2.5 Military Handbook:4
MIL-HDBK-1791Designing for Internal Aerial Delivery in Fixed Winged Aircraft
2.6 ACGIH Documents:5
Threshold Limit Values
2.7 Drawings:6
17-1-8565Extension Kit, Pintle 17-1-8584Mounting Kit Shelter To HMMWV 17-2-0035 Interface Control Drawing for, Shelter, Electrical Equipment, Lightweight, Types I and III
13228E1639Standard Camouflage, Pattern For Shelter, Lightweight, Multipurpose
3 General Requirements
3.1 First Article—When specified (see6.3), a sample shall
be subjected to first article inspection in accordance with4.1.1
A first article is defined as a preproduction or an initial production sample consisting of one or more of each type of completed shelters
1 This specification is under the jurisdiction of ASTM Committee E06 on
Performance of Buildings and is the direct responsibility of Subcommittee E06.53
on Materials and Processes for Durable Rigidwall Relocatable Structures.
Current edition approved Oct 1, 2010 Published October 2010 Originally
approved in 2003 as PS 138 - 03 Last previous edition approved in 2004 as
E2377 – 04 DOI: 10.1520/E2377-10.
2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3 Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale,
PA 15096-0001, http://www.sae.org.
4 Available from Standardization Documents Order Desk, DODSSP, Bldg 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:// dodssp.daps.dla.mil.
5 Available from American Conference of Governmental Industrial Hygienists, Inc (ACGIH), 1330 Kemper Meadow Dr., Cincinnati, OH 45240, http:// www.acgih.org.
6 Available from Shelter Technology, Engineering & Fabrication Directorate, U.S Army Natick Soldier RD&E Center, ATTN: RDNS-ST, Kansas Street, Natick,
MA 01760-5018, http://www.natick.army.mil.
Trang 23.2 Physical Performance Requirements:
3.2.1 Weight and Payload—The shelter weight and payload
capacity of each shelter type shall be as listed inTable 1 The
maximum shelter weight listed does not include the weight of
the Mounting Kit and Pintle Extension and their attaching
hardware The shelter shall be capable of accepting the payload
distribution specified in the contract or purchase order (see
6.2) The Contractor shall fashion an appropriate simulated
payload design to be used for all testing This payload design
shall be approved by the procuring agency prior to its use in
any test
3.2.2 Parts InterchangeabiIity:
3.2.2.1 Spare Parts—The spare parts are listed inTable 2
and are depicted on interface drawing number 17-2-0035 All
spare parts and related assemblies shall be functionally and
dimensionally interchangeable without modification or rework
of the part, assembly, or shelter
3.2.2.2 Interface Parts—The interface parts are listed in
Table 3 All interface parts and related assemblies shall be functionally and dimensionally interchangeable, without modi-fication or rework of the part, assembly, shelter, or vehicle, with the reference parts listed inTable 3
3.2.3 Shelter Configuration—The shelter shall meet the
configuration constraints specified on interface drawing
17-2-0035 for the shelter type specified
3.2.3.1 Shelter Flatness and Squareness—Shelter surfaces
shall be flat and square Each surface of the shelter shall be flat within 1⁄8 in (0.32 cm) per each 48 in (122 cm) length Adjacent surfaces shall be perpendicular within 0.10 degrees
3.2.3.2 Shelter Dimensions—The shelter shall meet the
dimensional constraints within the specified tolerances re-quired by interface drawing 17-2-0035 for those dimensions, which are not provided for reference only
3.2.3.3 Integration—The shelter shall be capable of
accept-ing all integration configurations of the systems listed inTable
4 (see 6.2) without modification or rework to the system integration designs listed in Table 4 The shelter shall be capable of accepting integration configuration cutouts at vari-ous locations Shelter surfaces shall be capable of accepting the installation of individual pieces of equipment installed by system integrators at various locations For installations where threaded mechanical fasteners are the preferred fasteners, the attaching surfaces shall be capable of resisting the loads listed
inTable 5for the listed sizes of threaded mechanical fasteners, without damage or degradation to the shelter or fastener
3.2.4 Chemical and Biological (CB) Resistance—All shelter
surfaces, except weather seals and gaskets, shall be resistant to, and shall not absorb, chemical and biological agent contamination, decontamination fluids, and petroleum prod-ucts Weather seals and EMI gaskets shall either meet the requirements above or be easily replaceable
3.2.5 Pressurization—The shelter shall be capable of being
pressurized to withstand over pressurization of 1.2 in water gauge (iwg) with an air leakage not to exceed 10 standard cubic feet per minute (scfm) for Types I and III
3.2.6 Roof Loads—The shelter roof shall be capable of supporting, without damage or degradation: (1) a uniformly
distributed load of 40 lb/ft2 (0.0195 kg/cm2) over the entire
surface and (2) a concentrated load of 660 lb (299.4 kg) over
a 1 by 2 ft (30 by 61 cm) area, applied anywhere on the roof
3.2.7 Floor Loads—The shelter floor shall be capable of supporting, without damage or degradation: (1) a uniformly
distributed load of 65 lb/ft2 (0.0317 kg/cm2) over the entire
floor, (2) a concentrated load of 1 000 lb (453.6 kg) applied over a 1 by 2 ft (30 by 61 cm) area, and (3 ) a point load of 125
lb (56.7 kg), over 1 in.2(6.45 cm2)
3.2.8 Door:
3.2.8.1 Door Handle—From either side, the shelter door
shall be capable of being opened and closed with a maximum force of 48 lb (21.8 kg) applied to the door handle From inside the shelter, the shelter door shall be capable of being opened and closed with a maximum force of 48 lb (21.8 kg) applied to the door handle with the outside handle locked The door shall
be capable of being padlocked from the outside
TABLE 1 Weight and Payload Capacity
Type
Maximum
Shelter
Weight
Minimum Payload Capacity
Mounting Kit Incl.
Hardware
Pintle Extension Incl Hardware
(275.8 kg)
3300 lb (1496.9 kg)
88 lb (39.9 kg)
50 lb (22.7 kg)
(291.7 kg)
3300 lb (1496.9 kg)
88 lb (39.9 kg)
50 lb (22.7 kg)
TABLE 2 Spare Parts
Part HMMWV Mounting Kit Pintle Extension Kit Door Assembly Rear Ladder Steps T-bar Door Holder
TABLE 3 Interface Parts
TABLE 4 System Integration ConfigurationsA
All Source Analysis System
Chemical Biological Protected Shelter
Common Ground Station
Firefinder
Light Ground Station Module
Meteorological Measuring Set
Standardized Integrated Command Post System
Trojan
Unmanned Aerial Vehicle—Short Range
AAvailable from Shelter Technology, Engineering & Fabrication Directorate, U.S.
Army Natick Soldier RD&E Center, ATTN: RDNS-ST, Kansas Street, Natick, MA
01760-5018, http://www.natick.army.mil.
TABLE 5 Attaching Surface Resistance Load
Threaded Fastener
10 to 32
1 ⁄ 4 through 1 ⁄ 2
8 (1.11 kg-m)
10 (1.38 kg-m)
800 (362.9 kg)
1 000 (453.6 kg)
Trang 33.2.8.2 Door Structure and Hinge Assembly—The door and
hinge assembly shall be capable of supporting a 200 lb (90.7
kg) static load applied parallel to the hinge line, along the door
edge opposite the hinge, with the door open to 90 degrees,
without degradation or damage to the door or door hardware
and the door shall operate freely after such a load is applied
3.2.8.3 Door Stop—The door shall include a doorstop
ca-pable of automatically latching the door, when opened, at 90
degrees The stop shall automatically prevent the door from
swinging beyond 90 degrees when engaged and allow the door
to open 180 degrees when disengaged The door stop shall be
capable of being disengaged by personnel, while they are
standing on the ground, when the shelter is mounted on the
HMMWV and shall not obstruct entry/exit through the door
The doorstop shall be capable of withstanding a static load
equal to 10 lb/ft2(0.0049 kg/cm2) times the largest surface area
of the door The load shall be applied normal to the door’s
largest surface and on the edge opposite the hinge, with the
door latched at 90 degrees The door and its hardware shall be
capable of withstanding these loads without degradation,
damage, or improper door operation
3.2.8.4 Door Maintainability—The door shall not be
remov-able from the exterior when locked and shall be easily
removable with hand tools when unlocked Hand tools are
defined as those found in Tool Kit, General Mechanics,
Automotive and Shop Equipment, Automotive Maintenance
and Repair (NSN: 5180-00-177-7033 and 4910-00-754-0654,
respectively)
3.2.8.5 Door Drip Edge—There shall be a drip edge over
the entire width of the door The drip edge shall prevent water
rolling down the side of the shelter from entering the shelter
3.2.9 Ladder—A ladder shall be provided to allow
person-nel carrying equipment, with a combined weight of up to 400
lb (181.4 kg), to enter and exit the shelter safely while the
shelter is mounted on the vehicle without damage or
degrada-tion to the shelter or ladder The ladder shall have a stowage
location on the door as described on interface drawing
17-2-0035 The ladder must stow securely in all transportation
modes (see3.4)
3.2.10 Impact Resistance—The shelter shall be capable of
withstanding, without damage, the impact of any of the hand
tools as defined in 3.2.8.4, dropped onto the top of the floor
surface from a height of 30 in (76 cm)
3.2.11 Roof Access Steps/handholds—Roof access steps and
handholds shall be provided for safe access to the roof These
steps/handholds shall be either built into the shelter or attached
to the exterior The steps/handholds shall be designed such that
the vehicle/shelter combination does not (1) exceed the legal
highway size limitations imposed by states and foreign
countries, and (2) limit any other modes of transportation (that
is, rail, air, ship) The roof access steps/handholds shall be
designed for the 5th percentile female through the 95th
percentile male military personnel and each step shall be
capable of supporting 400 lb (181.4 kg) without deformation of
the step or shelter
3.2.12 Interface Requirements—The shelter shall conform
to the interface requirements noted on interface drawing
17-2-0035
3.3 Environmental Performance Requirements:
3.3.1 Marine Atmosphere—The shelter, in operational and
storage mode, except for the mounting kit’s shock isolator assembly, shall be fully operational when exposed to a marine environment equivalent to 25 lb/acre/yr (2.8 g/m2/yr) The shelter shall not corrode or degrade
3.3.2 Electromagnetic Interference (EMI)—The shelter shall
provide the minimum shielding effectiveness prescribed by Specification E1925, Figure 1, in any location of the shelter over the frequency range of 150 kHz to 10 Ghz
3.3.3 Climate Range:
3.3.3.1 Temperature Range—In storage, the shelter shall be
capable of withstanding exposure to temperatures of −70 to 160°F (−56.7 to 71.1°C) with no evidence of corrosion or degradation of the fasteners, seals, or other hardware In transit, the shelter shall be capable of withstanding exposure to temperatures of −65 to 160°F (−53.9 to 71.1°C) The opera-tional temperature of the shelter shall be −65 to 125°F (−53.9
to 51.7°C) plus solar load
3.3.3.2 Temperature Shock—The shelter shall withstand a
temperature shock from an equilibrium state at 160 to −70°F (71.10 to −56.7°C) and from an equilibrium, state at −70 to 160°F (−56.7 to 71.1°C) without evidence of structural damage, degradation, or permanent deformation
3.3.3.3 Solar Load—The shelter shall withstand a solar
induced outer roof surface temperature of 205°F (96.1°C) while maintaining an internal temperature of 85°F (29.4°C), without evidence of structural damage, degradation, or perma-nent deformation
3.3.3.4 Sunshine (Ultraviolet Effects)—The shelter shall
show no evidence of structural damage, degradation, or per-manent deformation as a result of exposure to ultraviolet effects
3.3.3.5 Humidity—The shelter shall be capable of
with-standing daily exposure of up to 97 % relative humidity, and exposure of 100 % relative humidity (with condensation) for short periods of time, without evidence of structural damage, degradation, or permanent deformation
3.3.4 Heat Transfer—The shelter shall have an overall heat
transfer coefficient of no more than 0.50 BTU/h/ft2/°F (0.24 cal/h/cm2/°C)
3.3.5 Blowing Dust/Sand—The external moving parts of the
shelter shall be designed to resist the effects of blowing dust and sand without degradation Blowing sand is defined as 150
to 1 000 micron particles in concentrations of 1.32 by 10-4 pounds per cubic feet (lb/ft3)(2.11 by 10-6g/cm3) with a wind velocity of 1 750 6 250 ft/min (533.4 6 76.2 m/min)
3.3.6 Watertightness—The completed shelter, without the
aide of supplementary sealing, caulking, taping, etc., shall be capable of withstanding a 40 psig (0.0195 kg/cm2) spray from nozzles located in accordance with Specification E1925 The shelter shall not allow water leakage into the shelter and shall not gain weight (see4.2.1.1)
3.3.7 Detectability:
3.3.7.1 Color and Camouflage—Unless otherwise specified
(see 6.2), the shelter shall be the standard color and pattern specified on drawing 13228E1639 The interior surface of the personnel door shall match the primary exterior color of the
Trang 4shelter The color of the interior ceiling shall be painted
semi-gloss white in accordance with Color Number 27875 in
accordance with FED-STD-595 The interior walls and floor
shall be painted semi-gloss light green in accordance with
Color Number 24533 in accordance with FED-STD-595 All
painting shall be in accordance with MIL-C-53072
3.3.7.2 Blackout—The shelter, with the door closed, shall
not permit a light source from within to emit detectable
amounts of light
3.4 Transportability Performance Requirements—The
shel-ter and shelshel-ter/vehicle combinations shall not exceed the legal
highway size limitations imposed by states and foreign
coun-tries and shall be capable of obtaining transportability approval
from Military Traffic Management Command Transportability
Engineering Agency (MTMCTEA) based on requirements for
transport in the following modes
3.4.1 Rail Transport—The dismounted shelter and shelter/
vehicle combinations, with a simulated payload (see 3.2.1),
shall: (1) meet the Gabarit International de Chargement (GIC)
equipment gauge envelope as defined in interface standard
MIL-STD-1366, and (2) shall be capable of withstanding
multiple rail impacts without damage or degradation to the
shelter or shelter/vehicle combination, and without damage to
the tiedown cables, or blocking or bracing, (see4.4.1)
3.4.2 Fixed-wing Air Transport—The dismounted shelter
and shelter/vehicle combinations, with payload (see 3.2.1)
shall be transportable in C-130 and larger Air Mobility
Com-mand (AMC) aircraft The dismounted shelter shall be capable
of being aircraft loaded while attached to a 463L pallet The
shelter mounted on the M1097 HMMWV shall be capable of
roll-on/roll-off loading at ramp angles of 15 degrees on C-130
and larger AMC aircraft without special handling procedures or
equipment
3.4.3 Rotary Wing External Air Transport—The dismounted
shelter and shelter/vehicle combination, with payload (see
3.2.1) shall be capable of being externally transported by DoD
rotary wing aircraft, CH-47 and larger At maximum loaded
weight, the dismounted shelter and shelter/vehicle combination
shall be capable of meeting the external air transport
require-ments specified in Annex A1 The dismounted shelter with or
without mission equipment shall also be capable of being flown
under the UH-60 helicopter The shelter, shelter/vehicle and
shelter/vehicle/trailer combinations shall be structurally
ca-pable of meeting the requirements of interface standard
MIL-STD-209 and withstanding the loads when flown in: single
point, dual point, and tandem load configurations and shall
show no signs of damage or degradation as a result of being
flown
3.4.4 Ground Mobility—The shelter/vehicle combination,
with payload (see 3.2.1), mounted on an M1097 HMMWW,
shall be capable of being driven over road courses as defined
by the Perryman, Churchville, and Munson courses found at
Aberdeen Proving Ground, Maryland, without damage or
degradation to the shelter, or damage or degradation to the
vehicle, caused by the shelter The shelter/vehicle combination
shall meet U.S and NATO countries highway legal limits
3.4.5 Fording—The dismounted Type I shelter shall be
capable of being forded to a depth of 30 in (76 cm) of water,
measured from the lowest part of the shelter, without structural damage, water penetration into the shelter, weight gain, or signs of seal failure
3.4.6 Material Handling—The dismounted shelter, with
payload (see 3.2.1), shall he capable of withstanding flat and rotational drops from 6 in (15 cm) without structural damage, permanent deformation, or degradation The shelter shall also
be capable of being placed on an unimproved surface without structural damage, permanent deformation, or degradation
3.4.7 Lifting and Tiedown Provisions—The shelter shall be
provided with lifting and tiedown provisions that meet the requirements of interface standard MIL-STD-209
3.5 Identification—The exterior of the shelter shall be
per-manently marked to allow the user to identify the manufacturer, contract number, and production unit The di-mensions which locate the center-of-gravity of the shelter in the three planes; the gross weight and mission equipment payload of the shelter; and the bearing pressure on the bottom shock elements This information shall be visible with the shelter either mounted or dismounted from the vehicle The location of the center-of-gravity shall be determined by the contractor using the first article unit of production with simulated mission payload
3.6 Recycled, Recovered or Environmentally Preferable
Materials—Recycled, recovered, or environmentally
prefer-able materials should be used to the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advan-tageous life cycle costs
3.7 Toxicity—Materials used shall cause no skin irritations
or other injuries and produce no vapor hazards, including the emission of toxic or noxious odors, to personnel, in or around the shelter, under all environmental conditions Exposure of personnel to toxic substances shall not be in excess of the threshold values contained in the ACGIH Threshold Limit Val-ues
3.8 Flame Resistance—The shelter shall be designed to be
fire resistant in accordance with Specification E1925
4 Verification
4.1 Classification of Inspections—Alternative test methods,
techniques, or equipment, such as the application of statistical process control, the contractor may propose tool control or cost effective sampling procedures Acceptable alternative verifica-tion approaches, including the use of sample testing, shall be identified in the contract The inspection requirements speci-fied herein are classispeci-fied as follows:
4.1.1 First Article Inspection—When a first article
inspec-tion is required, it shall be applied to the first article submitted
in accordance with 3.1 Specific verifications to be performed shall be defined by the contract (see 6.2) and shall include verifications contained inTable 6
4.1.2 Conformance Inspection—When a conformance
in-spection is required (see 6.2), specific inspections to be performed shall be defined in the contract (see 6.2) and shall include any verification contained herein
4.2 Physical Performance Verification:
Trang 54.2.1 Weight and Payload:
4.2.1.1 Weight—Compliance with3.2.1shall be determined
by weighing the shelter, the mounting kit, and the pintle
extension including their associated hardware The scale used
shall have 1 lb (453.6 g) or less graduation and shall have an
accuracy of at least 61 lb (453.6 g) The scale shall have a
current calibration, traceable to the National Institute for
Standards and Technology Any item exceeding maximum
weight listed inTable 1 shall be considered a failure
4.2.1.2 Payload—Racks, shelves, attaching hardware, and
individual weights shall be installed in the shelter to simulate
a payload of 3300 lb (1496.9 kg) (see 3.2.1) The simulated
payload shall be distributed throughout the shelter (see 6.2)
This simulated payload shall be used for all verifications which
require a payload, and any failure of this payload (racks, shelves, or attaching hardware) attributable to the shelter during the course of the test shall constitute failure of the test being performed
4.2.2 Parts Interchangeability:
4.2.2.1 Spare-parts—Compliance with3.2.2.1 shall be de-termined by selecting two shelters from the production lot of completed shelters The parts listed in Table 2 shall be interchanged between the shelters The interchange shall be accomplished by removing the fasteners, interchanging the parts and reinstalling the fasteners Inability to interchange the parts or loss of functionality in accordance with 3.2.2.1shall constitute failure of this test
4.2.2.2 Interface Parts—Compliance with 3.2.2.2 shall be determined by selecting one of each of the parts listed inTable
3 from the production lot of completed shelters The inter-change shall be accomplished by removing the fasteners, interchanging the parts and reinstalling the fasteners with a government furnished shelter/vehicle combination Inability to interchange the parts in accordance with3.2.2.2shall constitute failure of this test
4.2.3 Shelter Configuration—The shelter shall be inspected
to determine compliance with 3.2.3 Failure to meet the requirements of3.2.3shall constitute failure of this test
4.2.3.1 Shelter Flatness and Squareness—The following
flatness and squareness tests shall be performed to determine compliance with the requirements with3.2.3.1 Failure to meet the requirements of 3.2.3.1shall constitute failure of this test
(1) Flatness—The flatness of the shelter panels shall be
determined using a straight edge, that is at least 48 in (120 cm) long, which is flat within 0.005 in (0.13 mm) total Two1⁄8-in (3.2 mm) shims shall be placed under the straight edge, one at each end A series of measurements shall be taken along the length of the straight edge, in both the horizontal and vertical directions, across the shelter’s interior/exterior surfaces to identify the largest cup or bow
(2) Squareness—The shelter shall be tested in accordance
with Specification E1925 For the purpose of this test, any horizontal surface shall be considered a roof/floor and any vertical surface shall be considered a wall In those regions where a 36 in (90 cm) square is impractical, a square of the appropriate size shall be used and the allowed gap shall be proportional
4.2.3.2 Shelter Dimensions—Each non-reference dimension
specified on the interface drawing 17-2-0035 shall be mea-sured Failure to meet the requirements of 3.2.3.2 shall constitute failure of this test
4.2.3.3 Integration—The shelter shall be examined to
deter-mine compliance with3.2.3.3 In addition, the shelter will be integrated with one or more of the systems listed in Table 4
(see 4.1) After the successful integration of the shelter, threaded fasteners shall be tested Test fixtures shall be fashioned to evaluate the shelter’s ability to securely hold threaded fasteners (10-32 through 1/2-20 bolts) The test fixtures shall be fashioned to induce only a twisting load to the shelter attachment point for the torque test and, primarily, only
an axial tensile load through the centerline of the shelter attachment point for the pull-out test Reaction forces applied
TABLE 6 Sequence Of First Article Verifications
Paragraph
Verification Paragraph
Chemical and biological (CB) resistance 3.2.4 4.2.4
Electromagnetic interference (EMI) (2nd
time)
Trang 6by the pull-out test fixture onto the shelter surface shall be
outside a 3 in (7.6 cm) radius measured from the center line of
the fastener being tested Failure to meet the requirements of
3.2.3.3shall constitute failure of this test
(1) Torque—To determine compliance, a torque load equal
to 8 ft-lb (1.11 kg-m) for the 10-32 bolt and 10 ft-lb (1.38
kg-m), for the other bolts shall be applied to all fasteners
installed in the shelter, fasteners used to integrate the system
(see4.2.3.3) should be used wherever possible Failure to meet
the torque requirements of 3.2.3.3 shall constitute failure of
this test
(2) Pull-out—To determine compliance, a tensile load
equal to 800 lb (362.9 kg) for the 10-32 bolt and 1 000 lb
(453.6 kg) for the other bolts shall be applied to all fasteners
installed in the shelter, fasteners used to integrate the system
(see4.2.3.3) should be used wherever possible Failure of meet
the pull-out requirements of 3.2.3.3shall constitute failure of
this test
4.2.4 Chemical and Biological (CB) Resistance—To
deter-mine compliance with the requirements of 3.2.4, it shall be
verified that the shelter is finished in accordance with
MIL-C-53072
4.2.5 Pressurization—Air shall be supplied to the shelter, in
operational configuration, with all appropriate openings closed,
and an internal pressure of 1.2-in water gauge shall be
obtained and maintained The air pressure and air flow shall be
stabilized Any additional air supplied to maintain specified
internal pressure shall be recorded to determine compliance
with 3.2.5 Failure to meet the requirements of 3.2.5 shall
constitute failure of this test
4.2.6 Roof Loads—The shelter roof shall be subjected to a
uniform load of 40 pounds per square foot (lb/ft2) (0.0195
kg/cm2) over the entire surface After removal of the uniform
load, a 660-lb (299.4 kg) load over a 1- by 2-ft (30- by 61-cm)
area at the weakest area of the roof shall be applied Each test
shall be for a duration of 5 min Failure to meet the
require-ments of3.2.6both during the test and subsequent removal of
the load shall constitute failure of this test
4.2.7 Floor Loads—The shelter’s floor shall be uniformly
loaded to 65 lb/ft2(0.0317 kg/cm2) for 30 min Prior to removal
of the uniform load, all moveable parts shall be operated to
ensure no interference exists between components After
completion of the above test, the uniform load shall be
removed and a concentrated 1 000 lb load shall be applied over
a 1- by 2-ft (30- by 61-cm) area centered on the floor and left
in position for 30 min The 2-ft (61-cm) dimension shall be
parallel to the shelter’s sidewall Prior to removal of the
concentrated load, all movable parts shall be operated to ensure
no interference exists between components After completing
both of the above tests, the concentrated load shall be removed
and a load of 125 lb (56.7 kg), balanced on a 1 in.2(6.45 cm2)
block, shall be applied for 5 min to the center of the floor
Failure to meet the requirements of3.2.7shall constitute failure
of this test
4.2.8 Door:
4.2.8.1 Door Handle—The shelter door shall be securely
closed A 48 lb (22 kg) load shall be applied to the door handle
in the direction which best facilitates opening the door After it
has been verified that 48 lb is adequate to open the door, the door shall be closed and a 48 lb (21.8 kg) force applied in the direction which best facilitates the securing of the door After
it has been verified that 48 lb (21.8 kg) is adequate to secure the door, the outer door handle shall be locked and the above procedure shall he repeated Failure to meet the requirements
of 3.2.8.1, shall constitute failure of this test
4.2.8.2 Door Structure and Hinge Assembly—The door shall
have a 200 lb (90.7 kg) static load applied parallel to the hinge line, along the door edge opposite the hinge, with the door open
to 90 degrees After 30 min the load shall be removed and the door examined Failure to meet the requirements of 3.2.8.2
shall constitute failure of this test
4.2.8.3 Door Stop—This test shall be performed with the
door in the open position, held by the door stop mechanism A fixture shall be attached to the midpoint of the edge of the door opposite from the hinge which shall permit the application of
a load equivalent to 10 lb/ft2(0.0049 kg/cm2) times the largest surface area of the door, normal to the door’s surface, using free running pulleys and a 1⁄4 in (0.635 cm) diameter steel cable to transmit the load Failure to meet the requirements of
3.2.8.3 shall constitute failure of this test
4.2.8.4 Door Maintainability—The door shall be inspected
to ensure compliance with3.2.8.4 Failure to meet the require-ments of 3.2.8.4shall constitute failure of this test
4.2.8.5 Door Drip Edge—The door shall be inspected to
ensure compliance with 3.2.8.5 Failure to meet the require-ments of 3.2.8.5shall constitute failure of this test
4.2.9 Ladder—The ladder shall be attached to the shelter,
which is mounted on an M1097 HMMWV, or to a mounting surface which simulates the M1097 HMMWV, according to the contractors attaching instructions A 400 lb (181.4 kg) load shall be applied for 5 min in the location, which shall cause the greatest amount of stress to the ladder The ladder shall not be damaged or deformed Failure to meet the requirements of
3.2.9shall constitute failure of this test
4.2.10 Impact Resistance—A hand tool as defined in3.2.8.4
shall be selected and shall be allowed to freefall from a height
of 30 in (76 cm) onto the floor surface of the shelter Failure
to meet the requirements of 3.2.10 shall constitute failure of this test
4.2.11 Roof Access Steps/handholds—A vertical load of 400
lb (181.4 kg) shall be applied one step at a time to the outer most point of each deployed step and maintained for 30 s The access steps/handholds shall he evaluated for compliance with
3.2.11 Failure to meet the requirements of 3.2.11 shall constitute failure of this test
4.2.12 Interface Requirement—The interfaces shall be
evaluated for compliance with the interface drawings listed in
3.2.12 Failure to meet the requirements of 3.2.12 shall constitute failure of this test
4.3 Environmental Performance Verification:
4.3.1 Marine Atmosphere—The shelter, in the operational
and storage mode, shall be exposed to a marine atmosphere and tested in accordance with SpecificationE1925 Failure to meet the requirements of3.3.1shall constitute failure of this test
4.3.2 Electromagnetic Interference (EMI)—The shelter shall
be tested in accordance with Test Method E1851, except that
Trang 7the measurements shall be made at 150 kHz and 14 Mhz in the
H-field and 400 MHz, 1 GHz, and 10 GHz in Plane Wave
Failure to meet the requirements of3.3.2shall constitute failure
of this test
4.3.3 Climatic Range:
4.3.3.1 Temperature Range—The shelter shall be tested in
accordance with, Specification E1925 Failure to meet the
requirements of3.3.3.1shall constitute failure of this test
4.3.3.2 Temperature Shock—The shelter shall be tested in
accordance with MIL-STD-810 Failure to meet the
require-ments of 3.3.3.2shall constitute failure of this test
4.3.3.3 Solar Load—The shelter shall be tested in
accor-dance with Specification E1925 Failure to meet the
require-ments of 3.3.3.3shall constitute failure of this test
4.3.3.4 Sunshine (Ultraviolet Effects)—The shelter’s
exte-rior components subject to solar exposure shall be tested in
accordance with MIL-STD-810 Failure to meet the
require-ments of 3.3.3.4shall constitute failure of this test
4.3.3.5 Humidity—The shelter shall be tested for daily
exposure of up to 97 % relative humidity for 20 h and exposure
of 100 % relative humidity (with condensation) for 4 h in
accordance with MIL-STD-810 Moisture Resistance Test,
Method 507, Procedure II, Cycles 4 or 5 After cycling has
been completed the shelter shall be inspected Failure to meet
the requirements of 3.3.3.5shall constitute failure of this test
4.3.4 Heat Transfer—The shelter shall be tested in
accor-dance with Specification E1925 Failure to meet the
require-ments of3.3.4shall constitute failure of this test The Type III
shelters may have the tunnel openings closed off for this test
4.3.5 Blowing Dust/Sand—The shelter shall be tested in
accordance with test method standard MIL-STD-810, except
the sand particle size shall be as specified in Table 7 The
second 6-h test (Step 3 of Method 510.1) at 145°F (62.8°C)
shall be performed immediately after reaching stabilization in
Step 2 of Procedure 1 Subsequent to testing, all exposed
hardware shall be operated Failure to meet the requirements of
3.3.5shall constitute failure of this test
4.3.6 Watertightness—The shelter shall be tested in
accor-dance SpecificationE1925 The shelter shall be weighed after
the test in accordance with 4.2.1.1 Failure to meet the
requirements of3.3.6as measured within the tolerance of the
scales shall constitute failure of this test
4.3.7 Detectability:
4.3.7.1 Color and Camouflage—The shelter shall be
in-spected to determine conformance with the color and pattern as
specified in3.3.7.1 Failure to meet the requirements of3.3.7.1
shall constitute failure of this test
4.3.7.2 Blackout—The shelter shall be tested in accordance
with Specification E1925 Failure to meet the requirements of
3.3.7.2 as determined by an observer detecting rays of light,
shall constitute failure of this test
4.4 Transportability Performance Verification:
4.4.1 Rail Transport—The dismounted shelter and shelter/
vehicle combinations, with a simulated payload (see 4.2.1.2), shall be tested in accordance with test method standard MIL-STD-810, Method 516.4, Procedure VIII, rail impact test When secured to the flatcar, the shelter and shelter vehicle combinations shall then be inspected for conformance to Gabarit International de Chargement (GIC) gauge envelope as shown in interface standard MIL-STD-1366 Failure to meet the requirements of3.4.1shall constitute failure of this test
4.4.2 Fixed-wing Air Transport Test—The shelter and
shelter/vehicle combinations, with a simulated payload (see
4.2.12), shall be tested for compliance with3.4.2
MIL-HDBK-1791 shall be used for guidance in conducting this test Failure
to meet the requirements of3.4.2shall constitute failure of this test
4.4.3 Rotary-wing Air Transport Test—The shelter and
shelter/vehicle combinations, with a simulated payload (see
4.2.1.2), shall be tested in accordance with interface standard MIL-STD-209 andAnnex A1 Failure to meet the requirements
of 3.4.3shall constitute failure of this test
4.4.4 Ground Mobility—The shelter/vehicle combination,
with a simulated payload (see 4.2.1.2), shall be tested for compliance with 3.4.4 SAE-AS8090, Type V Mobility, shall
be used as guidance for this test Failure to meet the require-ments of 3.4.4 shall constitute failure of this test Table 8
defines the speed/distance requirement for ground mobility testing
4.4.5 Fording—The dismounted Type I shelter shall be
immersed in water to a depth of 30 6 1⁄2 in (76 6 1.3 cm), measured from the lowest part of the shelter, for a period of 30 min Afterwards, the shelter shall be weighed in accordance with 4.2.1.1 Failure to meet the requirements of 3.4.5 as measured within the tolerance of the scales shall constitute failure of this test
4.4.6 Material Handling—The dismounted shelter shall be
tested in accordance with 4.4.6.1, 4.4.6.2, and 4.4.6.3 to determine compliance with 3.4.6
4.4.6.1 Flat-drop—The shelter, with a simulated payload
(see 4.2.1.2), shall be tested in accordance with Specification
E1925 Failure to meet the requirements of3.4.6shall consti-tute failure of this test
4.4.6.2 Rotational Drop—The shelter, with a simulated
payload (see 4.2.1.2) shall be tested in accordance with SpecificationE1925 Failure to meet the requirements of3.4.6
shall constitute failure of this test
4.4.6.3 Shelter Placement—A 1.5 in (3.8 cm) high cube
shall be placed on a flat surface The shelter with a simulated payload (see4.2.1.2) shall be lowered onto the surface over the cube Failure to meet the requirements of3.4.6shall constitute failure of this test
4.4.7 Lifting and Tiedown Provisions—The shelter’s lifting
and tiedown provisions shall be inspected and tested for conformance to interface standard MIL-STD-209 and compli-ance with3.4.7 Failure to meet the requirements of3.4.7shall constitute failure of this test
4.5 Identification—The shelter shall be inspected to verify
the requirements of 3.5 Failure meet the requirement of3.5
shall constitute failure of this test
TABLE 7 Sand Particle Size
1 000 microns
500 microns
150 microns
100 % passing mesh screen
98 ± 2 % passing through mesh screen
90 ± 2 % passing through mesh screen
Trang 84.6 Toxicity—Demonstrate the shelter does not produce
toxic exposures by meeting ACGIH Threshold Limit Values
for materials used in the shelter’s construction After
complet-ing each of the followcomplet-ing environmental verifications,
Humid-ity (4.3.3.5) and Temperature Range (4.3.3.1), a panel of three
inspectors shall perform odor tests Any smell, persisting after
15 s, classified as nauseous, repellent, burning or strongly
penetrating or causing dizziness, drying of nasal passages,
sneezing or any adverse reaction, detected by any of the
inspectors shall be considered a failure Failure to meet the
requirements of3.7shall constitute failure of this test
4.7 Flame Resistance—Two specimens of a production
sandwich panel 12 by 12 in (30.5 by 30.5 cm) shall be tested
in accordance with Specification E1925 Failure to meet the
requirements of3.8shall constitute failure of this test
5 Packaging
5.1 For acquisition purposes, the packaging requirements
shall be as specified in the contract or order (see 6.2)
6 Notes
NOTE 1—This section contains information of a general or explanatory
nature, which may be helpful, but is not mandatory.
6.1 Intended Use—These shelters are highly mobile
multi-purpose shelters They are suited for housing electronics and
communications equipment They can be mounted on the
vehicles listed in 1.1 These Shelters are not intended for
airdrop
6.2 Acquisition Requirements—Acquisition documents
must specify the following:
6.2.1 Title, number and date of the specification
6.2.2 Quantities and types of shelters (see1.2)
6.2.3 Issue of DODISS to be cited in the solicitation, and if required, the specific issue of individual documents referenced (see 2.2and2.3)
6.2.4 Requirements for first article and conformance inspection, including number of shelters, inspection lot size, sample size, specific verification test to be performed, and sequence of tests (see3.1,4.1,6.3)
6.2.5 Drawings of the System Integration Configurations (see3.2.3.3) should be provided If additional System Integra-tion ConfiguraIntegra-tions are required they should be included in the contract or purchase order
6.2.6 If standard color and camouflage are not required, then alternate color and camouflage with verification procedures must be specified (see 3.3.7.1)
6.2.7 Payload distribution, rack layout/design, and/or center
of gravity (see3.2.1and4.2.1.2)
6.2.8 Packaging requirements (see5.1)
6.3 First Article—When a first article is required (see6.2), the purchaser should include specific instructions in all acqui-sition documents regarding arrangements for inspection and approval of the first article
7 Keywords
7.1 command post; electronics; EMI shield; HMMWV; multipurpose; SICPS
ANNEX
(Mandatory Information) A1 REQUIREMENTS FOR THE CERTIFICATION OF EXTERNALLY TRANSPORTED MILITARY EQUIPMENT BY
DE-PARTMENT OF DEFENSE ROTARY WING AIRCRAFT
A1.1 Scope
A1.1.1 This annex establishes the general and detailed
requirements for the certification of externally transported
military equipment by Department of Defense rotary wing
aircraft This annex is a mandatory part of the specification
The information contained herein is intended for compliance
A1.2 General Requirements
A1.2.1 Shipping Provisions:
A1.2.1.1 Number—The number of slinging Provisions shall
conform to the requirements as specified in the current revision
of MIL-STD-209
TABLE 8 Ground Mobility—Limited Mileage (at the LMS Maximum Payload Configuration)
(MPH)
Average Speed (MPH)
Distance (Miles)
Cross-country (unimproved) (Perry cross-country
secondary road “A”)
Trang 9A1.2.1.2 Location of Lift Provisions—The location of
sling-ing provisions shall conform to the requirements as specified in
the current revision of MIL-STD-209
A1.2.1.3 Dimensions—Slinging provisions shall conform to
the dimensions as specified in the current revision of
MIL-STD-209
A1.2.1.4 Frame Attachments—Frame members should not
be used as lifting points, unless specifically designed for that
purpose Frame members designated for lifting shall meet the
structural requirements of the proof load testing section (see
A1.3.2) and shall provide a means of restricting movement of
the sling legs along the frame member
A1.2.1.5 Spreader Bars—Spreader bars must be certified for
use in EAT by the U.S Army Soldier System Center-Natick
Spreader bars must meet the requirement:
(1) Spreader bars or other load spreading equipment must
be specified in the new equipment specification
(2) The contractor to ensure such devices remain with the
item must provide stowage provisions on the item
(3) Wooden spreader bars and/or other devices, which are
to be locally fabricated, shall not be permitted under any
circumstances
(4) All devices shall meet the structural requirements of
A1.3.2.4
A1.2.2 Rigging Procedures:
A1.2.2.1 Sling Sets—The standard military sling sets and
components shown inTable A1.1shall be used for rigging
A1.2.2.2 Minimum Sling Leg Clearance—The following
clearances are required between sling legs and the item of
equipment If minimum clearances cannot be met, padding of
the sling legs and/or proof load testing of potential contact area
will be required, in accordance with the proof load testing
section (see A1.3.2)
(1) Rope Type Sling Legs—A minimum clearance of 1 in.
(2.54 cm) must be maintained between rope type (round cross
section) sling legs and the load
(2) Webbing Type Sling Legs—A minimum clearance of 8
in (20.3 cm) must be maintained between webbing type (flat
cross section) sling legs and the load
A1.2.2.3 Non-standard Lifting Components—Non-standard
(non-type classified) lifting components are not permitted
unless approved by U.S Army Soldier System Center-Natick
and specified in the new equipment specification
A1.2.2.4 Drag Inducing Devices—Drag inducing devices
such as drogue chutes are not permitted unless approved by
U.S Army Soldier Systems Center-Natick
A1.2.2.5 Tandem Sling Loads—The following requirements
shall apply to all items of equipment rigged as tandem sling
loads:
(1) Each individual item of equipment shall meet the
requirements of this standard
(2) All devices required and used for attaching tandem
sling loads together must meet the structural requirements of this standard and shall be proof load tested in accordance with the requirements inA1.3.2
(3) All tandem sling loads require flight testing in the
tandem rigged configuration
A1.2.3 Static Lift Testing—Static lift testing is required for
each proposed lifting configuration, in accordance withA1.3.1 Static lift testing consists of lifting the item in the proposed rigging configuration to verify sling leg clearances and to determine sling leg angles and lift point loading
A1.2.4 Proof Load Testing—Proof load testing is required
for all slinging provisions, interference points, and load bearing components required for lifting, in accordance with A1.3.2 Proof load testing consists of a static pull test compression test
of each slinging provision or component to verify structural adequacy
A1.2.5 Flight Testing—Flight-testing is required for each
item in its proposed lifting configuration by each specified aircraft in accordance with section A1.3.3 Flight maneuvers shall be performed and test results documented in accordance with the Multi-Service Flight Data Collection Sheet (MSFDCS)
A1.3 Detailed Requirements
A1.3.1 Static Lift Testing—The following requirements
shall apply to all static lift testing:
A1.3.1.1 The item shall maintain stability while suspended
in the rigged configuration
A1.3.1.2 The maximum sling leg tension (static load times the materiel lift point load factor) shall not exceed the sling leg design limit load as specified inTable 1for the proposed sling set The static load is determined by the static lift test or by mathematical analysis All load calculations shall be performed using the sling leg angles of the proposed rigging configura-tion
A1.3.1.3 The sling legs shall meet the clearance require-ments of A1.2.2.2 Structural members, which contact a sling leg in the rigged configuration, must be proof load tested, in accordance withA1.3.2
A1.3.1.4 For dual point configurations, the weight distribu-tion of the item shall meet the dual point weight balance requirements of the specified lifting aircraft (for example, no more than 60 % of the total load on either hook for the CH-53E helicopter)
TABLE A1.1 Military Sling Sets
Trang 10A1.3.2 Proof Load Testing:
A1.3.2.1 Material Lift Point Load Factor—The materiel lift
point load factor is calculated using Table A1.2 and is a
function of the External Air Transport Weight (EATWT) and
the EATWT/ Maximum Projected Frontal Area (MPFA) (see
Fig A1.1) ratio For items of equipment with cargo carrying
capability, the materiel lift point load factor shall be calculated
for the minimum and maximum possible EATWT (for
example, curbweight and gross vehicle weight)
(1) For an EATWT/MPFA ratio of greater or equal to 60
lb/ft2(0.0293 kg/cm2), the materiel lift point load factor is a
function of EATWT in accordance with Table A1.2
(2) For an EATWT/MPFA ratio between 45 and 60 lb/ft2
(0.022 and 0.0293 kg/cm2), the materiel lift point load factor of
Table A1.2is increased by [0.16 × (60-(EATWT/MPFA))]
(3) For an EATWT/MPFA ratio of less than or equal to 45
lb/ft2 (0.0220 kg/cm2), the materiel lift point load factor of
Table A1.2is increased by 2.4
A1.3.2.2 Calculation of the Design Limit Load—The design
limit load is the maximum resultant product of the materiel lift
point load factor multiplied by the static load for the worst case
loading condition
A1.3.2.3 Proof Load Testing Requirements—Proof load
test-ing consists of a static pull test or compression load test, to the
design limit load of A1.3.2.2, in accordance with the
require-ments in the current revision of MIL-STD-209 The following requirements shall also apply to all proof load testing for EAT certification:
(1) The application of proof load shall be in the direction of
the sling leg when the item is in its’ proposed rigged configu-ration
(2) All structural members which contact the sling legs
must be compression tested to the actual contact load times the Material Lift Point Load Factor
(3) Load spreading devices or structures, subject to
com-pressive buckling, must be compression tested to 1.5 times Design Limit Load without failure
A1.3.2.4 Ultimate Load Verification—Analysis and/or
test-ing must be performed to verify ultimate load capability
A1.3.3 Flight Testing—The following requirements shall
apply to all flight testing:
A1.3.3.1 All maneuvers specified by the Multi-Service Flight Data Collection Sheet (MSFDCS) shall be performed A1.3.3.2 The item shall demonstrate stability during all maneuvers performed during the flight test
A1.3.3.3 The item shall not sustain any damage due to flight and shall be fully operational upon completion of the flight test A1.3.3.4 The results of the flight test shall be documented
on the MSFDCS
TABLE A1.2 Calculation of Materiel Lift Point Load Factor
EATWT lb (kg)/
MPFA ft 2
(cm 2
Materiel Lift Point Load Factor
AIf computing in kg, then subtract 6804 instead of 15 000.